Slakker...be nice. If you do not want to take the time to help clarify, then do not post.
bpoor...I am not sure if you are familiar, but...
Being a SI Perc does NOT necessarily mean it is an ONYX. In fact many Onyx come from PNG, to "qualify" as Onyx is must be solid black everywhere except for face and fins...
If you could post a pic of you pair that would be awesome.